How do I install the Instant Messaging application IP Messenger?

When you see an error message like that from pkg-config ("No package 'foo' found"), that means that the file foo.pc cannot be found by pkg-config. The usual reason for this is that you don't have the package which provides this file installed, so you should search either using apt-file or on packages.ubuntu.com for it. In this specific case however, you'll get no results because the old GNOME 2 panel applets have all been removed.

If you pass --disable-applet to ./configure, you should be able to get past this step.

The package g2ipmsg is available in the repositories - v0.9.6 for all versions of ubuntu except for oneiric. Thus to install in versions prior to oneiric or for 12.04 and above:

g2ipmsg

However its not available in Oneiric (11.10) because it doesnt compile under oneiric due to the changes to Gnome-Panel and the dependency on the gnome-2 applet libraries.

You could compile and install to produce this result in gnome-classic (no-effects)

Note - when the application starts - it starts minimised to the gnome-panel. For some reason, in Unity, this application does not appear - probably the minimised application is not directly visible in the Unity panel.

To get the application to work under Unity you need to enable the old sys-tray:

gsettings set com.canonical.Unity.Panel systray-whitelist "['all']"

Then logout and login before searching for g2ipmsg in Dash

I've compiled and added this to my PPA. If you wish to compile this yourself, then instructions are below.

Install from PPA

sudo add-apt-repository ppa:fossfreedom/g2ipmsg
sudo apt-get update
sudo apt-get install g2ipmsg

to run g2ipmsg

1. If you are using the Gnome-Classic interface, then G2ipmsg will be found in the Accessories menu option
2. If you are using Gnome-Shell then search in Activities for g2ipmsg and the application will start minimized in the system-tray notification area (bottom right) of the screen. You will need to move you mouse to that area to make the application icon visible. My recommendation would be to use the system-tray extension to make the application icon visible at all times in the top-right of the screen. See my link answer below for more information about these areas and how to install the extension
3. If you are using Unity/Unity 2D you will need to manually enable the system-tray area for the application to start in the top-right area of the screen next to the indicator area.

how to compile

• Get the sources:

cd ~/Downloads
wget https://launchpad.net/ubuntu/+archive/primary/+files/g2ipmsg_0.9.6%2Bdfsg.orig.tar.gz
wget https://launchpad.net/ubuntu/+archive/primary/+files/g2ipmsg_0.9.6%2Bdfsg-1.1.diff.gz

• Now install some prerequisites and libraries

sudo apt-get install build-essential devscripts cdbs debhelper autotools-dev libgnomeui-dev libgstreamer0.10-dev libxml-parser-perl libssl-dev

• Then uncompress and patch the sources

 tar zxvf g2ipmsg_0.9.6+dfsg.orig.tar.gz
 gunzip g2ipmsg_0.9.6+dfsg-1.1.diff.gz
 patch -p0 < g2ipmsg_0.9.6+dfsg-1.1.diff

• Compile to create deb packages

cd g2ipmsg-0.9.6+dfsg/
debuild -us -uc

• Install the deb package

cd ..
sudo dpkg -i g2ipmsg_0.9.6+dfsg-1.1_i386.deb

Note - if you are compiling 64bit - then the package name will end in amd64.deb

Linked Question:

1. How to open aMSN that has been minimised to the tray?

A basic method for going through the dependencies of a piece of software you are trying to build from the source is as follows:

1. Try to compile the code until it complains, then look at the error message and try to figure out what the missing package may be called

2. Use the command apt-cache search <string> to help you locate the packages you need - the shorter the <string>, the better chances of finding matching package names/descriptions

3. The packages you need to install are almost always named lib...-dev in Ubuntu/Debian; install the relevant package listed by apt-cache using sudo apt-get install <package-name> and go back to step 1

So for instance, if you're looking for the "libpanelapplet" package, running apt-cache search libpanel will return:

gir1.2-panelapplet-4.0 - GObject introspection for the GNOME Panel Applet library
gnome-panel-dbg - GNOME Panel and library for panel applets - debugging symbols
libpanel-applet-4-0 - library for GNOME Panel applets
libpanel-applet-4-dev - library for GNOME Panel applets - development files
libpanel-applet-4-doc - library for GNOME Panel applets - documentation files

of which libpanel-applet-4-dev should contain the development headers you are looking for. (Note: the above output is on Precise, the version in Oneiric might have a different name.)

You can install iptux. it links with the windows system ipmsg and add those list also

sudo apt-get update
sudo apt-get install iptux